Date: Mon, 11 Sep 2006 07:46:52 +0200 From: Ian FREISLICH <if@hetzner.co.za> To: Prafulla Deuskar <pdeuskar@freebsd.org> Cc: Pyun YongHyeon <pyunyh@gmail.com>, freebsd-net <freebsd-net@freebsd.org>, freebsd-current <freebsd-current@freebsd.org>, Jack Vogel <jfvogel@gmail.com> Subject: Re: RFC: TSO patch for current Message-ID: <E1GMedA-0003eD-Vj@hetzner.co.za> In-Reply-To: Message from Prafulla Deuskar <pdeuskar@freebsd.org> of "Sat, 09 Sep 2006 07:00:15 GMT." <20060909070015.GA71855@hub.freebsd.org>
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Prafulla Deuskar wrote: > Pyun YongHyeon [pyunyh@gmail.com] wrote: > >What happen if users disable hardware > > VLAN tag insertion with ifconfig(8)? > > TSO requires that VLAN tag insertion is done by hardware This is bad news. I use CARP interfaces in all my VLANs which places the interface in promiscuous mode. I've noted that the em driver stops tagging ethernet frames when hardware tag insertion is enabled and the interface is in promiscuous mode. I don't know enough to determine whether this is a hardware or software bug. Ian -- Ian Freislich
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